3 ideas
15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
18470 | Maybe truth-making is an unanalysable primitive, but we can specify principles for it [Smith,B] |
19699 | A Gettier case is a belief which is true, and its fallible justification involves some luck [Hetherington] |